Я больше не боюсь - Netflix

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Я больше не боюсь - Russian grammar - Netflix

Russian grammar employs an Indo-European inflexional structure, with
considerable adaptation. Russian has a highly inflexional morphology,
particularly in nominals (nouns, pronouns, adjectives and numerals).
Russian literary syntax is a combination of a Church Slavonic heritage,
a variety of loaned and adopted constructs, and a standardized
vernacular foundation. The spoken language has been influenced by the
literary one, with some additional characteristic forms. Russian
dialects show various non-standard grammatical features, some of which
are archaisms or descendants of old forms discarded by the literary
language. Note: In the discussion below, various terms are used in the
meaning they have in standard Russian discussions of historical grammar.
In particular, aorist, imperfect, etc., are considered verbal tenses
rather than aspects, because ancient examples of them are attested for
both perfective and imperfective verbs.

Я больше не боюсь - Demonstrative pronouns - Netflix

If the preposition “about” is used (usually о), for singular
demonstrative pronouns (as with any other words starting with a vowel)
it is об: об э́том – about this.